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为进一步研究汶川地震中震损砖石古塔灌浆围箍加固修复后的抗震性能,以德阳某砖石古塔的第三层为原型,按缩尺比例砌筑两个有楼板的墙筒,模拟地震作用使其震损,采用灌浆+围箍法进行加固。对其进行低周反复试验,试验结果表明:采用灌浆与围箍加固能显著提高砌体墙的耗能能力及整体性。通过有限元软件ANSYS Workbench对试验进行了数值模拟,结果与试验结果比较吻合。在试验数据基础上提出灌浆与围箍加固的抗剪承载力预估公式,为后续灌浆与围箍加固抗剪承载力的计算提供了依据。
In order to further study the anti-seismic performance of the earthquake-damaged masonry grouting hoops in Wenchuan earthquake, the third layer of an ancient brick pagoda in Deyang is used as a prototype to build two wall- Simulate the earthquake so that the earthquake damage, the use of grouting + hoop reinforcement method. The low-cycle test was carried out. The test results show that the grouting and hoop reinforcement can significantly improve the energy consumption and integrity of masonry walls. The finite element software ANSYS Workbench was used to simulate the experiment. The results are in good agreement with the experimental results. Based on the experimental data, the prediction formula of shear capacity of grouting and hoop reinforcement is provided, which provides a basis for the calculation of shear capacity of subsequent grouting and hoop reinforcement.